Which pulley system is best? Gym memberships can be expensive, but that’s a poor excuse for not doing your best to stay in shape. If you can’t afford the luxury of having a monthly membership to a ...

Explains how pulleys work to lift heavy weights more easily. A fixed pulley changes the direction of force, allowing for easier lifting, while a movable pulley reduces the amount of force needed to ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...